CBSE Class 9 Answered
A hollow cylindrical pipe 21 dm long is made of copper. Its outer and inner diameters are 10 cm and 6 cm respectively. Find the volume of the copper used in making the pipe.
Asked by Topperlearning User | 10 Apr, 2014, 03:24: PM
Expert Answer
Let h = height of the pipe = 21 dm = 210 cm
R = External Radius =
r = Internal Radius =
Volume of copper used in making the pipe
= Volume of External cylinder - Volume of Internal cylinder
Answered by | 10 Apr, 2014, 05:24: PM
Application Videos
Concept Videos
CBSE 9 - Maths
Asked by harshsejal.83 | 16 Feb, 2023, 03:36: PM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by remsindi | 18 Jul, 2021, 06:11: PM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by ayushsuukla987 | 31 Dec, 2020, 10:45: AM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by agentdevil1818 | 03 Mar, 2020, 05:27: PM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by Sourabh2002yadav | 13 Nov, 2018, 04:07: PM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by Topperlearning User | 13 Oct, 2017, 01:47: PM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by Topperlearning User | 13 Oct, 2017, 01:52: PM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by Topperlearning User | 13 Oct, 2017, 02:14: PM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by Topperlearning User | 26 Oct, 2017, 11:52: AM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by Topperlearning User | 13 Oct, 2017, 01:56: PM
ANSWERED BY EXPERT